diff --git a/samtools-0.1.13/bam_maqcns.h b/samtools-0.1.13/bam_maqcns.h
new file mode 100644
--- /dev/null
+++ b/samtools-0.1.13/bam_maqcns.h
@@ -0,0 +1,61 @@
+#ifndef BAM_MAQCNS_H
+#define BAM_MAQCNS_H
+
+#include "glf.h"
+
+#define BAM_ERRMOD_MAQ2 0
+#define BAM_ERRMOD_MAQ  1
+#define BAM_ERRMOD_SOAP 2
+
+struct __bmc_aux_t;
+
+typedef struct {
+	float het_rate, theta;
+	int n_hap, cap_mapQ, errmod, min_baseQ;
+
+	float eta, q_r;
+	double *fk, *coef;
+	double *lhet;
+	struct __bmc_aux_t *aux;
+} bam_maqcns_t;
+
+typedef struct {
+	int q_indel; // indel sequencing error, phred scaled
+	float r_indel; // indel prior
+	float r_snp; // snp prior
+	// hidden parameters, unchangeable from command line
+	int mm_penalty, indel_err, ambi_thres;
+} bam_maqindel_opt_t;
+
+typedef struct {
+	int indel1, indel2;
+	int cnt1, cnt2, cnt_anti;
+	int cnt_ref, cnt_ambi;
+	char *s[2];
+	//
+	int gt, gl[2];
+	int q_cns, q_ref;
+} bam_maqindel_ret_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+	bam_maqcns_t *bam_maqcns_init();
+	void bam_maqcns_prepare(bam_maqcns_t *bm);
+	void bam_maqcns_destroy(bam_maqcns_t *bm);
+	glf1_t *bam_maqcns_glfgen(int n, const bam_pileup1_t *pl, uint8_t ref_base, bam_maqcns_t *bm);
+	uint32_t bam_maqcns_call(int n, const bam_pileup1_t *pl, bam_maqcns_t *bm);
+	// return: cns<<28 | cns2<<24 | mapQ<<16 | cnsQ<<8 | cnsQ2
+	uint32_t glf2cns(const glf1_t *g, int q_r);
+
+	bam_maqindel_opt_t *bam_maqindel_opt_init();
+	bam_maqindel_ret_t *bam_maqindel(int n, int pos, const bam_maqindel_opt_t *mi, const bam_pileup1_t *pl, const char *ref,
+									 int _n_types, int *_types);
+	void bam_maqindel_ret_destroy(bam_maqindel_ret_t*);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/samtools-0.1.13/bgzf.h b/samtools-0.1.13/bgzf.h
new file mode 100644
--- /dev/null
+++ b/samtools-0.1.13/bgzf.h
@@ -0,0 +1,157 @@
+/* The MIT License
+
+   Copyright (c) 2008 Broad Institute / Massachusetts Institute of Technology
+
+   Permission is hereby granted, free of charge, to any person obtaining a copy
+   of this software and associated documentation files (the "Software"), to deal
+   in the Software without restriction, including without limitation the rights
+   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+   copies of the Software, and to permit persons to whom the Software is
+   furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in
+   all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+   THE SOFTWARE.
+*/
+
+#ifndef __BGZF_H
+#define __BGZF_H
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <zlib.h>
+#ifdef _USE_KNETFILE
+#include "knetfile.h"
+#endif
+
+//typedef int8_t bool;
+
+typedef struct {
+    int file_descriptor;
+    char open_mode;  // 'r' or 'w'
+    bool owned_file, is_uncompressed;
+#ifdef _USE_KNETFILE
+	union {
+		knetFile *fpr;
+		FILE *fpw;
+	} x;
+#else
+    FILE* file;
+#endif
+    int uncompressed_block_size;
+    int compressed_block_size;
+    void* uncompressed_block;
+    void* compressed_block;
+    int64_t block_address;
+    int block_length;
+    int block_offset;
+	int cache_size;
+    const char* error;
+	void *cache; // a pointer to a hash table
+} BGZF;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Open an existing file descriptor for reading or writing.
+ * Mode must be either "r" or "w".
+ * A subsequent bgzf_close will not close the file descriptor.
+ * Returns null on error.
+ */
+BGZF* bgzf_fdopen(int fd, const char* __restrict mode);
+
+/*
+ * Open the specified file for reading or writing.
+ * Mode must be either "r" or "w".
+ * Returns null on error.
+ */
+BGZF* bgzf_open(const char* path, const char* __restrict mode);
+
+/*
+ * Close the BGZ file and free all associated resources.
+ * Does not close the underlying file descriptor if created with bgzf_fdopen.
+ * Returns zero on success, -1 on error.
+ */
+int bgzf_close(BGZF* fp);
+
+/*
+ * Read up to length bytes from the file storing into data.
+ * Returns the number of bytes actually read.
+ * Returns zero on end of file.
+ * Returns -1 on error.
+ */
+int bgzf_read(BGZF* fp, void* data, int length);
+
+/*
+ * Write length bytes from data to the file.
+ * Returns the number of bytes written.
+ * Returns -1 on error.
+ */
+int bgzf_write(BGZF* fp, const void* data, int length);
+
+/*
+ * Return a virtual file pointer to the current location in the file.
+ * No interpetation of the value should be made, other than a subsequent
+ * call to bgzf_seek can be used to position the file at the same point.
+ * Return value is non-negative on success.
+ * Returns -1 on error.
+ */
+#define bgzf_tell(fp) ((fp->block_address << 16) | (fp->block_offset & 0xFFFF))
+
+/*
+ * Set the file to read from the location specified by pos, which must
+ * be a value previously returned by bgzf_tell for this file (but not
+ * necessarily one returned by this file handle).
+ * The where argument must be SEEK_SET.
+ * Seeking on a file opened for write is not supported.
+ * Returns zero on success, -1 on error.
+ */
+int64_t bgzf_seek(BGZF* fp, int64_t pos, int where);
+
+/*
+ * Set the cache size. Zero to disable. By default, caching is
+ * disabled. The recommended cache size for frequent random access is
+ * about 8M bytes.
+ */
+void bgzf_set_cache_size(BGZF *fp, int cache_size);
+
+int bgzf_check_EOF(BGZF *fp);
+int bgzf_read_block(BGZF* fp);
+int bgzf_flush(BGZF* fp);
+int bgzf_flush_try(BGZF *fp, int size);
+
+#ifdef __cplusplus
+}
+#endif
+
+static inline int bgzf_getc(BGZF *fp)
+{
+	int c;
+	if (fp->block_offset >= fp->block_length) {
+		if (bgzf_read_block(fp) != 0) return -2; /* error */
+		if (fp->block_length == 0) return -1; /* end-of-file */
+	}
+	c = ((unsigned char*)fp->uncompressed_block)[fp->block_offset++];
+    if (fp->block_offset == fp->block_length) {
+#ifdef _USE_KNETFILE
+        fp->block_address = knet_tell(fp->x.fpr);
+#else
+        fp->block_address = ftello(fp->file);
+#endif
+        fp->block_offset = 0;
+        fp->block_length = 0;
+    }
+	return c;
+}
+
+#endif
diff --git a/samtools-0.1.13/errmod.h b/samtools-0.1.13/errmod.h
new file mode 100644
--- /dev/null
+++ b/samtools-0.1.13/errmod.h
@@ -0,0 +1,24 @@
+#ifndef ERRMOD_H
+#define ERRMOD_H
+
+#include <stdint.h>
+
+struct __errmod_coef_t;
+
+typedef struct {
+	double depcorr;
+	struct __errmod_coef_t *coef;
+} errmod_t;
+
+errmod_t *errmod_init(float depcorr);
+void errmod_destroy(errmod_t *em);
+
+/*
+	n: number of bases
+	m: maximum base
+	bases[i]: qual:6, strand:1, base:4
+	q[i*m+j]: phred-scaled likelihood of (i,j)
+ */
+int errmod_cal(const errmod_t *em, int n, int m, uint16_t *bases, float *q);
+
+#endif
diff --git a/samtools-0.1.13/kaln.h b/samtools-0.1.13/kaln.h
new file mode 100644
--- /dev/null
+++ b/samtools-0.1.13/kaln.h
@@ -0,0 +1,67 @@
+/* The MIT License
+
+   Copyright (c) 2003-2006, 2008, 2009 by Heng Li <lh3@live.co.uk>
+
+   Permission is hereby granted, free of charge, to any person obtaining
+   a copy of this software and associated documentation files (the
+   "Software"), to deal in the Software without restriction, including
+   without limitation the rights to use, copy, modify, merge, publish,
+   distribute, sublicense, and/or sell copies of the Software, and to
+   permit persons to whom the Software is furnished to do so, subject to
+   the following conditions:
+
+   The above copyright notice and this permission notice shall be
+   included in all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+   BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+   ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+   CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+   SOFTWARE.
+*/
+
+#ifndef LH3_KALN_H_
+#define LH3_KALN_H_
+
+#include <stdint.h>
+
+#define MINOR_INF -1073741823
+
+typedef struct {
+	int gap_open;
+	int gap_ext;
+	int gap_end_open;
+	int gap_end_ext;
+
+	int *matrix;
+	int row;
+	int band_width;
+} ka_param_t;
+
+typedef struct {
+	int iio, iie, ido, ide;
+	int eio, eie, edo, ede;
+	int *matrix;
+	int row;
+	int band_width;
+} ka_param2_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+	uint32_t *ka_global_core(uint8_t *seq1, int len1, uint8_t *seq2, int len2, const ka_param_t *ap,
+							 int *_score, int *n_cigar);
+	int ka_global_score(const uint8_t *_seq1, int len1, const uint8_t *_seq2, int len2, const ka_param2_t *ap);
+#ifdef __cplusplus
+}
+#endif
+
+extern ka_param_t ka_param_blast; /* = { 5, 2, 5, 2, aln_sm_blast, 5, 50 }; */
+extern ka_param_t ka_param_qual; // only use this for global alignment!!!
+extern ka_param2_t ka_param2_qual; // only use this for global alignment!!!
+
+#endif
diff --git a/samtools-0.1.13/knetfile.h b/samtools-0.1.13/knetfile.h
new file mode 100644
--- /dev/null
+++ b/samtools-0.1.13/knetfile.h
@@ -0,0 +1,75 @@
+#ifndef KNETFILE_H
+#define KNETFILE_H
+
+#include <stdint.h>
+#include <fcntl.h>
+
+#ifndef _WIN32
+#define netread(fd, ptr, len) read(fd, ptr, len)
+#define netwrite(fd, ptr, len) write(fd, ptr, len)
+#define netclose(fd) close(fd)
+#else
+#include <winsock2.h>
+#define netread(fd, ptr, len) recv(fd, ptr, len, 0)
+#define netwrite(fd, ptr, len) send(fd, ptr, len, 0)
+#define netclose(fd) closesocket(fd)
+#endif
+
+// FIXME: currently I/O is unbuffered
+
+#define KNF_TYPE_LOCAL 1
+#define KNF_TYPE_FTP   2
+#define KNF_TYPE_HTTP  3
+
+typedef struct knetFile_s {
+	int type, fd;
+	int64_t offset;
+	char *host, *port;
+
+	// the following are for FTP only
+	int ctrl_fd, pasv_ip[4], pasv_port, max_response, no_reconnect, is_ready;
+	char *response, *retr, *size_cmd;
+	int64_t seek_offset; // for lazy seek
+    int64_t file_size;
+
+	// the following are for HTTP only
+	char *path, *http_host;
+} knetFile;
+
+#define knet_tell(fp) ((fp)->offset)
+#define knet_fileno(fp) ((fp)->fd)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef _WIN32
+	int knet_win32_init();
+	void knet_win32_destroy();
+#endif
+
+	knetFile *knet_open(const char *fn, const char *mode);
+
+	/* 
+	   This only works with local files.
+	 */
+	knetFile *knet_dopen(int fd, const char *mode);
+
+	/*
+	  If ->is_ready==0, this routine updates ->fd; otherwise, it simply
+	  reads from ->fd.
+	 */
+	off_t knet_read(knetFile *fp, void *buf, off_t len);
+
+	/*
+	  This routine only sets ->offset and ->is_ready=0. It does not
+	  communicate with the FTP server.
+	 */
+	off_t knet_seek(knetFile *fp, int64_t off, int whence);
+	int knet_close(knetFile *fp);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/samtools-0.1.13/kprobaln.h b/samtools-0.1.13/kprobaln.h
new file mode 100644
--- /dev/null
+++ b/samtools-0.1.13/kprobaln.h
@@ -0,0 +1,49 @@
+/* The MIT License
+
+   Copyright (c) 2003-2006, 2008, 2009 by Heng Li <lh3@live.co.uk>
+
+   Permission is hereby granted, free of charge, to any person obtaining
+   a copy of this software and associated documentation files (the
+   "Software"), to deal in the Software without restriction, including
+   without limitation the rights to use, copy, modify, merge, publish,
+   distribute, sublicense, and/or sell copies of the Software, and to
+   permit persons to whom the Software is furnished to do so, subject to
+   the following conditions:
+
+   The above copyright notice and this permission notice shall be
+   included in all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+   BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+   ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+   CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+   SOFTWARE.
+*/
+
+#ifndef LH3_KPROBALN_H_
+#define LH3_KPROBALN_H_
+
+#include <stdint.h>
+
+typedef struct {
+	float d, e;
+	int bw;
+} kpa_par_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+	int kpa_glocal(const uint8_t *_ref, int l_ref, const uint8_t *_query, int l_query, const uint8_t *iqual,
+				   const kpa_par_t *c, int *state, uint8_t *q);
+
+#ifdef __cplusplus
+}
+#endif
+
+extern kpa_par_t kpa_par_def, kpa_par_alt;
+
+#endif
diff --git a/samtools.cabal b/samtools.cabal
--- a/samtools.cabal
+++ b/samtools.cabal
@@ -1,5 +1,5 @@
 Name:                samtools
-Version:             0.1
+Version:             0.1.1
 Synopsis:            Binding to the C samtools library
 Description:         Binding to the C samtools library, which reads and
                      writes SAM format alignments, both binary and tab-
@@ -49,8 +49,10 @@
                        samtools-0.1.13/bam.h, samtools-0.1.13/bam_endian.h, samtools-0.1.13/faidx.h, 
                        samtools-0.1.13/glf.h, samtools-0.1.13/khash.h,
                        samtools-0.1.13/kseq.h, samtools-0.1.13/ksort.h, samtools-0.1.13/kstring.h,
-                       samtools-0.1.13/razf.h, samtools-0.1.13/sam.h, samtools-0.1.13/sam_header.h
-  CC-options:          -g -D_FILE_OFFSET_BITS=64 -D_USE_KNETFILE -Wno-unused-result
+                       samtools-0.1.13/razf.h, samtools-0.1.13/sam.h, samtools-0.1.13/sam_header.h,
+                       samtools-0.1.13/bgzf.h, samtools-0.1.13/knetfile.h, samtools-0.1.13/kaln.h,
+                       samtools-0.1.13/kprobaln.h, samtools-0.1.13/bam_maqcns.h, samtools-0.1.13/errmod.h
+  CC-options:          -g -D_FILE_OFFSET_BITS=64 -D_USE_KNETFILE
   Extra-libraries:     z
   Ghc-options:         -Wall
 
@@ -77,7 +79,9 @@
                        samtools-0.1.13/bam.h, samtools-0.1.13/bam_endian.h, samtools-0.1.13/faidx.h, 
                        samtools-0.1.13/glf.h, samtools-0.1.13/khash.h,
                        samtools-0.1.13/kseq.h, samtools-0.1.13/ksort.h, samtools-0.1.13/kstring.h,
-                       samtools-0.1.13/razf.h, samtools-0.1.13/sam.h, samtools-0.1.13/sam_header.h
-  CC-options:          -g -D_FILE_OFFSET_BITS=64 -D_USE_KNETFILE -Wno-unused-result
+                       samtools-0.1.13/razf.h, samtools-0.1.13/sam.h, samtools-0.1.13/sam_header.h,
+                       samtools-0.1.13/bgzf.h, samtools-0.1.13/knetfile.h, samtools-0.1.13/kaln.h,
+                       samtools-0.1.13/kprobaln.h, samtools-0.1.13/bam_maqcns.h, samtools-0.1.13/errmod.h
+  CC-options:          -g -D_FILE_OFFSET_BITS=64 -D_USE_KNETFILE
   Extra-libraries:     z
   Ghc-options:         -Wall
diff --git a/src/Bio/SamTools/LowLevel.chs b/src/Bio/SamTools/LowLevel.chs
--- a/src/Bio/SamTools/LowLevel.chs
+++ b/src/Bio/SamTools/LowLevel.chs
@@ -46,6 +46,8 @@
 import Control.Monad
 import qualified Data.ByteString.Char8 as BS
 
+#undef __BLOCKS__
+
 #include "faidx.h"
 #include "sam.h"
 #include "samtools.h"
